This is a Universal Fitting Product
Product Information
The factory B4x/B58 heat exchanger is not built to cater to the rigorous demands often associated with a modified build. The thin core is easily overwhelmed with IAT's rising dramatically once pushed beyond a few successive WOT pulls or even a few minutes at the track. This elevation in temperature gives way to the factory ECU fail safes pulling timing and reducing overall power in order to keep the system from overheating to the point of permanent damage. On an application where enjoyment is directly attributed to pushing the platform to its limits this constraint to cooling presents a challenge for the automotive enthusiast.
The Dinan B4x/B58 heat exchanger for the F2x/F3x chassis assists in mitigating these issues with a more robust core (48mm thick Dinan core vs. 27mm thick OEM core) that wields 78% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness requires unique "L" shaped end tanks to be incorporated as well, which also contributes to the overall thermal mass (ability to absorb, store, and release heat) improvement beyond the OEM setup. With up to a 15° IAT delta recorded over stock the Dinan heat exchanger is ready, and able, to assist in extending your vehicles ability to deliver maximum performance time and time again for your driving enjoyment!
Features:
- Average of 8° reduction in IAT's with a maximum reduction of 15° over 15 successive WOT pulls
- Reduces the tendency to heat soak / go in to limp mode
- 48mm thick Dinan cooler vs. 27mm thick stock cooler
- 78% more cooling surface area and volume than stock
- 100% TIG welded and pressure tested
- Installation hardware included (inclusive of xDrive specific transmission oil cooler brackets)
What's Included:
- DINAN Performance Heat Exchanger
Model  +  |
Drivetrain  |
|---|---|
| F22 - F23 - F87 M240i 3.0T I6 [B58] | + |
| F22 230i 2.0T I4 [B48] | + |
| F30 - F80 340i 3.0T I6 [B58] | + |
| F30 330i 2.0T I4 [B46] | + |
| F31 330i 2.0T I4 [B46] | + |
| F32 - F33 - F36 - F82 - F83 440i 3.0T I6 [B58] | + |
| F32 430i 2.0T I4 [B46] | + |
***ORDER CANCELLATIONS***
All order cancellations are processed during regular business hours only. Any order cancellation requests made outside of business hours will be processed during the next business day.
Any cancelled orders including orders that have not shipped will be subject to a 3.5% cancellation fee to offset order processing fees that are not refunded to BMP Tuning. Additionally, if your order has already shipped, you may incur additional fees if the shipment needs to be recalled and/or rerouted back to BMP Tuning.
Some products sold cannot be cancelled after the order has been placed due to agreements with the manufacturer, or in the case of made to order/custom items. This will be noted in the product description.
Please note: Cancellations made after hours, on the weekend, or on a holiday may not be processed for cancellation prior to the order being processed and shipped.
***RETURNS AND EXCHANGES***
BMP Tuning will accept returns for UNUSED merchandise in original packaging within 1 YEAR from the time of purchase!
UNUSED products in ORIGINAL PACKAGING that are RETURNED WITHIN 60 DAYS of purchase are eligible for a refund to the original payment method used.
UNUSED products in ORIGINAL PACKAGING returned PAST THE 60 DAY MARK and within the 1 year return period are eligible for store credit only. After 60 days, non-stocked items will be accepted at the discretion of BMP Tuning.
UNUSED products MUST BE IN ORIGINAL PACKAGING, containing all accessories, labels, and documentation.
**CUSTOMERS ARE RESPONSIBLE FOR ORIGINAL AND RETURN*** ***SHIPPING EXPENSES**
The customer is responsible for the return shipping costs/fees – original shipping fees are NON-REFUNDABLE and items shipped with FREE shipping will still be subject to actual shipping charges being NON-REFUNDABLE. BMP Tuning is not responsible for damage to items being returned to us by the shipping carrier and will contact you so that you can file a claim if an item arrives damaged.
Any returned item is subject to a fee of up to 15%.
Restocking fees are WAIVED in the event of a customer receiving a damaged / incorrect product.
KATAPULT: Katapult does not allow us to issue partial refunds. Katapult orders that are cancelled prior to fulfilment will be refunded 100% directly through Katapult. For Returns: Any Katapult purchases that require a partial refund will be given back to the customer as a store credit. No restocking fees will be deducted. However, the original shipping costs on the order will be deducted and the customer will also be responsible for the shipping costs to return item(s) to BMP Tuning.
***THERE ARE ABSOLUTELY NO RETURNS ON ANY ITEMS MARKED AS "SCRATCH & DENT", "OPEN BOX", "USED", OR OTHER "SPECIAL ORDER" ITEMS***
***PLEASE CONTACT US BY EMAIL / PHONE / MESSAGE TO***
***INITIATE A RETURN!***
***APPLICATION/FITMENT ISSUES***
If you need to return an item that does not fit your vehicle and you feel that there is an error in our listing, please contact us immediately. If we find an error on our website or on behalf of a BMP Tuning Representative, we will provide a shipping label for your return and arrange proper shipment of the correct items.
ALL PRODUCTS MUST STILL BE NEW CONDITION IN THE ORIGINAL BOXES, INCLUDING LABELING, HARDWARE, AND DOCUMENTATION.
Customers are responsible for checking the product description for applications prior to ordering anything from our site to verify that the items you have selected are appropriate for your vehicle. Items ordered that are listed correctly on our website but ordered in error WILL REQUIRE SHIPPING TO BE PAID BY THE CUSTOMER.
***DAMAGED/MISSING ITEMS IN SHIPMENT***
If you receive a package that is missing items or was damaged during shipment, please contact BMP Tuning WITHIN 10 DAYS OF DELIVERY. Please check all items as they are delivered! Be sure to keep all packing material, boxes and photos of the damage as this will be necessary to complete the damage claim with the specific courier. UPS/FED EX Typically take 8-15 business days to complete their investigation, however, this time frame could be extended depending on circumstances.
***PRICING***
While we always try to provide the most accurate product and pricing information, we are humans and can make mistakes. If we listed an incorrect price or information for any product on our site, BMP Tuning reserves the right to refuse or cancel any orders placed.
PRICING AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE.
Product Questions & Answers
Product Questions & Answers
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